RNF18GTD3K30 Equivalent & Substitute Parts

Part Overview

The RNF18GTD3K30 is a 3.3 kOhms ±2% metal film through-hole resistor rated at 0.125W (1/8W) in axial package configuration. Manufactured by Stackpole Electronics Inc, this component features flame retardant coating and safety construction suitable for general-purpose electronic applications. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when design requirements permit tolerance relaxation, power rating increases, or packaging format changes while maintaining core electrical functionality and mechanical compatibility.

Substiute Parts

RNF18GTD3K30

Stackpole Electronics IncIn Stock: 1125RNF18GTD3K30 Datasheet

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RNMF14FTC3K30

Stackpole Electronics IncIn Stock: 40049RNMF14FTC3K30 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The RNMF14FTC3K30 qualifies as a direct substitute based on the following allowed parameter variations:

Maintained Parameters (Must Match):

• Resistance value: 3.3 kOhms (identical)
• Package type: Axial (identical)
• Composition: Metal Film (identical)
• Operating temperature range: -55°C to 155°C (identical)
• Compliance: RoHS3 Compliant, REACH Unaffected (identical)
• Features: Flame Retardant Coating, Safety (identical)

Allowable Parameter Variations:

• Tolerance: ±2% (main part) to ±1% (substitute) — tighter tolerance is acceptable
• Power rating: 0.125W (main part) to 0.25W (substitute) — higher power rating is acceptable
• Temperature coefficient: ±100ppm/°C (main part) to ±50ppm/°C (substitute) — lower coefficient is acceptable
• Physical dimensions: 0.071" Dia × 0.130" L (main part) to 0.070" Dia × 0.130" L (substitute) — negligible variation within tolerance
• Packaging format: Tape & Reel (main part) to Cut Tape (substitute) — packaging format change only

Parameter Comparison

Engineering Selection Recommendations

The RNMF14FTC3K30 is suitable for applications where the RNF18GTD3K30 is specified, provided circuit design permits the following modifications:

• Higher power dissipation capability (0.25W versus 0.125W) does not create functional conflicts in circuits designed for 0.125W operation
• Tighter tolerance (±1% versus ±2%) provides improved accuracy without requiring circuit redesign
• Improved temperature stability (±50ppm/°C versus ±100ppm/°C) enhances performance across the operating range
• Axial package dimensions remain compatible with standard PCB layouts and through-hole assembly processes
• Both parts maintain identical compliance certifications and environmental ratings

Selection between these parts depends on procurement availability, packaging requirements (Tape & Reel versus Cut Tape), and cost considerations. Both parts are Active status products from the same manufacturer with full regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can RNMF14FTC3K30 replace RNF18GTD3K30 in existing designs?

A: Yes. The substitute part maintains identical resistance, package type, operating temperature range, and compliance certifications. The higher power rating and tighter tolerance are compatible with circuits designed for the original part.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel packaging supplies components on continuous carrier tape wound on reels, suitable for automated assembly. Cut Tape provides components on tape segments cut to specified lengths, suitable for manual assembly or smaller production runs. Both formats contain identical components.

Q: Does the ±1% tolerance of RNMF14FTC3K30 affect circuit compatibility?

A: No. Tighter tolerance improves accuracy and is compatible with circuits designed for ±2% tolerance. The substitute part will perform within or better than the original specification.

Q: Are the physical dimensions compatible?

A: Yes. Both parts are axial package with 0.130" length. Diameter variation (0.071" to 0.070") is negligible and does not affect PCB layout or assembly compatibility.

Q: What compliance certifications apply to both parts?

A: Both RNF18GTD3K30 and RNMF14FTC3K30 are RoHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic components.